With 16 marginal tentacles with very large and elongated bulbs, each with 1 or 2 pairs of lateral cirri, 16 rudimentary bulbs and 32 marginal swellings all without cirri. Umbrella 2.6 wide, 3.5 high, mesoglea thin; manubrium 1/3 of bell cavity; mouth with 4 lips; gonads on middle third of radial canals; statocysts not known.